3M™ Heavy Duty Duct Tape 3939

Industrial-Grade Duct Tape for Tough Jobs

3M™ Heavy Duty Duct Tape 3939 features a water-resistant polyethylene backing laminated to cloth reinforcement and an aggressive natural-rubber adhesive for high-tack, conformable performance. It tears cleanly by hand—horizontally or vertically—without slivering, making it a reliable choice for fast, durable holds across demanding environments.

High-Tack, Conformable, and Water-Resistant

Engineered for maintenance, repair, and construction operations, 3M™ Heavy Duty Duct Tape 3939 bonds quickly to a wide range of surfaces and stands up to moisture. The cloth-reinforced construction delivers strength with easy unwind and bi-directional hand tear. Common uses include hanging polyethylene drapes for containment activities, masking and protecting against light sandblast overspray, holding and seaming carpet padding, taping down cords, and hinging poster-board panels. The tape can be used in temperatures up to 200°F and has been burn tested per UL 723, ASTM E-84, NFPA 255, and UBC 8-1.

Key Features & Benefits

Reinforced Construction: Polyethylene-laminated cloth backing provides durability and conformability.
High-Tack Adhesion: Aggressive natural-rubber adhesive delivers strong, immediate stick.
Clean Hand Tear: Tears easily and cleanly in both directions without slivering.
Water Resistance: Backing helps resist moisture for dependable holds in challenging conditions.
Temperature Tolerance: Usable up to 200°F (93°C).
Versatile Applications: Ideal for containment drapes, masking, light sandblast overspray protection, carpet padding seams, cord taping, and panel hinging.
Broad Use Cases: Suitable for residential, industrial, and commercial environments including construction, electrical, marine, military, abatement, trucking, and automotive markets.

Technical Specifications

Backing: Water-resistant polyethylene laminated to cloth reinforcement
Adhesive: Natural-rubber (aggressive, high-tack)
Hand Tear: Bi-directional; tears cleanly without slivering
Use Temperature: Up to 200°F (93°C)
Burn Test Methods: UL 723, ASTM E-84, NFPA 255, UBC 8-1
Burn Test Results:: Flame Spread Index 0; Smoke Developed Index 30
Typical Applications:: Containment drapes, masking, light sandblast overspray protection, carpet padding seaming, cord taping, poster-board hinging

Why Choose This Tape

Proven performance metrics—bi-directional clean hand tear, high-tack natural-rubber adhesive, and usability up to 200°F—make 3M™ Heavy Duty Duct Tape 3939 the go-to choice for demanding applications that require strength, flexibility, and reliability under pressure.

Additional Product Information

3M 3939 Adhesive Type: Rubber
3M 3939 Backing Material: Polyethylene/Cloth Scrim
3M 3939 Core Size: 3 in
3M 3939 Elongation at Break: 17.0%
3M 3939 Environment: Indoor

3M Heavy Duty Duct Tape 3939

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